Grapefruit Soda
Carbonated grapefruit, sweetened, and the defining ingredient of the Paloma — Mexico’s most-drunk cocktail. It carries sugar, bubbles and a bitter citrus edge in one bottle, which is why the official recipe needs no syrup and only a token of lime.
Quick Facts
Flavour Profile
Primary Flavours
Tasting Notes
Sweet grapefruit with the pith bitterness left in, carried on firm carbonation and finishing drier than the sugar content suggests.
Storage & Handling
Cool and dark, sealed, and refrigerated once opened — though an opened bottle loses its carbonation within a day or two and a Paloma built on flat soda is a noticeably worse drink. Buy the size you will actually finish.
Usage
The official Paloma takes 100ml against 50ml of blanco tequila, and that single bottle supplies the sweetness, the carbonation and most of the flavour. It also lengthens gin, mezcal and vodka in the same way tonic does, with more sugar and considerably more fruit.
Why the Paloma Uses It
The official Paloma is tequila, lime, salt and grapefruit soda, and the soda is doing three jobs that would otherwise take three ingredients.
It brings the fruit, the sugar and the carbonation together, which is why the specification needs no syrup and only five millilitres of lime. Build the same drink with fresh grapefruit juice and you need soda water for length and a syrup for balance — that is a legitimate variation and a different, sharper drink. Mexico pours the soda, and has done since long before the cocktail canon noticed.
It is also why a Paloma is the easiest famous drink to make well: most of the work has been done inside the bottle.
The Bitterness Matters
Grapefruit is the only common citrus that brings genuine bitterness alongside its acid, and the good sodas keep it.
That comes from naringin, a flavonoid concentrated in the pith and peel, and it is what stops a sweetened fizzy drink reading as lemonade. It is also what the salt on a Paloma's rim is working against: salt suppresses the perception of bitterness, so the rim and the soda are a deliberate pair rather than two separate garnishing decisions.
A soda made from citric acid and flavouring has the sugar and none of the bitterness, and in a Paloma it tastes immediately thin.
What to Buy
Squirt is the traditional Mexican answer and the one most Paloma recipes assume. Jarritos Toronja is the other, sweeter and more strongly flavoured.
In the UK, Ting is the widely stocked Jamaican option and a good one — made with real juice and noticeably more bitter than the American sodas. San Pellegrino Pompelmo is the premium choice and the driest of them. Fever-Tree's is built as a mixer rather than a soft drink, which makes it cleaner and less sweet again.
Read the label for real juice content. That single line predicts the drink better than the brand does.
Against Grapefruit Tonic
They look interchangeable on a shelf and behave differently in a glass.
A grapefruit tonic carries quinine, which brings its own bitterness and a drier, more medicinal edge; it is built to sit against gin. A grapefruit soda is sweeter, fruitier and has no quinine at all. Swapped into a Paloma, tonic makes a drink that is drier and more bitter than intended, and it fights the agave rather than framing it.
Neither is wrong. They are different mixers, and a recipe naming one is not casually asking for the other.
Top Tips
- It is not grapefruit juice. It carries sugar and bubbles, and recipes account for both.
- Buy one made with real juice: the cheap versions are citric acid and colouring.
- Open it fresh. In a drink that is two thirds mixer, flat soda is the whole problem.
Common Questions
What is grapefruit soda?
Carbonated, sweetened grapefruit — a soft drink rather than a juice. It carries sugar, bubbles and the bitter pith edge of the fruit in one bottle, which is why the official Paloma needs neither syrup nor soda water alongside it.
Can I use grapefruit juice instead?
You can, and it makes a different drink. Fresh juice has no sugar and no carbonation, so you need a syrup for balance and soda water for length. The result is sharper and more aromatic; the official Paloma specifies the soda.
Which grapefruit soda is best for a Paloma?
Squirt is the traditional Mexican choice and Jarritos Toronja the sweeter alternative. In the UK, Ting is widely stocked and genuinely bitter, and San Pellegrino Pompelmo is the driest. Look for real juice content rather than a brand name.
Is grapefruit soda the same as grapefruit tonic?
No. Tonic contains quinine, which adds a dry, medicinal bitterness built to meet gin. Grapefruit soda has none and is sweeter and fruitier. Substituting tonic into a Paloma makes it drier and more bitter, and it fights the agave rather than framing it.